System Description
- The steering operation condition by the driver and the information from multiple sensors are computed by the chassis control module, and a command is transmitted to the ABS actuator and electric unit (control unit).
- The ABS actuator and electric unit (control unit) controls the brake based on the command from the chassis control module.
- When cornering, driver operation is reduced and vehicle behavior is smoothened.
- When the drive mode select switch is set to the "SPORT" mode, the amount of brake control provided by active trace control is reduced.
- When the PERSONAL mode is selected, active trace control can be switched ON/OFF through the "Infiniti Drive Mode Selector" on the integral switch.
- When the OFF the VDC system, the active trace control system is also completely turned OFF.
- When the active trace control function operates, operation display can be checked on the information display in the combination meter. However, when assist control operates to an excessive degree during cornering, this is not displayed.
- When a malfunction occurs in active trace control function, the master warning lamp illuminates and the information display in the combination meter informs the driver.
NOTE:
- Active trace control function may not be effective in all driving environments (traction conditions, etc.).
- When active trace control function operates, vibration may be transmitted to the brake pedal, an operation sound may be heard, and a feeling of deceleration may be felt. These are not symptoms of malfunctions and indicate normal operating conditions.
- When the active trace control is selected OFF, some functions will be kept ON to assist driver. (For example, avoidance condition.)
OPERATION CHARACTERISTICS
- This performs assistance when switching from deceleration (brake operation) to acceleration (accelerator operation) when driving on a curve. It operates the brake automatically to stabilize cornering and smoothens acceleration in the longitudinal and lateral directions.
- For the purpose of improving responsiveness during excessive steering operation, such as emergency avoidance steering, etc., the brake is applied to the inside wheel of the steering direction and causes turning momentum to be generated.
- When driving on a curve, change of the steering operation angle is controlled, vehicle movement is smoothened and cornering with a stable feeling is realized simultaneously by controlling the brake on the inner wheel, according to accelerator operation.
- When performing quick lane changes and other excessive steering operations, the brake is operated automatically, and erratic vehicle behavior due to steering operation is reduced.
SYSTEM DIAGRAM
INPUT SIGNAL AND OUTPUT SIGNAL
Major signal transmission between each unit via communication lines is shown in the following table.
| Component | Signal description |
|---|---|
| ECM | Mainly transmits the following signals to chassis control module via CAN communication.
|
| TCM | Mainly transmits the following signals to chassis control module via CAN communication.
|
| ABS actuator and electric unit (control unit) | Mainly transmits the following signals to chassis control module via CAN communication.
Mainly receives the following signals from chassis control module via CAN communication.
|
| Steering angle sensor | Mainly transmits the following signals to chassis control module via CAN communication.
|
| AV control unit | Mainly transmits the following signals to chassis control module via CAN communication.
|
| Combination meter | Mainly receives the following signals from chassis control module via CAN communication.
|
| Drive mode select switch | Mainly transmits the following signals to chassis control module.
|